US7172847B2ExpiredUtilityPatentIndex 63

Planographic printing plate precursor and planographic printing plate precursor laminate

Assignee: FUJI PHOTO FILM CO LTDPriority: Mar 28, 2002Filed: Mar 28, 2003Granted: Feb 6, 2007

Est. expiryMar 28, 2022(expired)· nominal 20-yr term from priority

Inventors:GOTO TAKAHIRO

B41C 2201/14B41C 2210/24B41C 2210/262B41C 2210/06B41C 2210/22B41C 1/1016B41C 2210/04B41C 1/1008B41C 2201/02B41M 5/465

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Claims

Abstract

The present invention provides a planographic printing plate precursor comprising a substrate and a negative image recording layer provided on the substrate containing: a compound that generates a radical or an acid by light or heat; a polymerizable compound or a crosslinking compound; and an infrared ray absorbing agent, wherein a dynamic friction coefficient of the outermost surface of the planographic printing plate precursor, at the side of the negative image recording layer being provided toward an inserting paper inserted into between the planographic printing plate precursors when the planographic printing plate precursors are laminated, is within a range from 0.2 to 0.7, as well as a planographic printing plate precursor laminate comprising the pluralty of the planographic printing plate precursors and inserting paper.

Claims

exact text as granted — not AI-modified

1. A planographic printing plate precursor comprising a substrate and a negative image recording layer provided on the substrate containing:
a compound that generates a radical or an acid by light or heat;
a polymerizable compound or a crosslinking compound; and
an infrared ray absorbing agent,
wherein a dynamic friction coefficient of the outermost surface of the planographic printing plate precursor, at the side of the negative image recording layer being provided toward an inserting paper inserted between the planographic printing plate precursors when the planographic printing plate precursors are laminated, is within a range from 0.2 to 0. 7, and
wherein an additive is present on the inserted paper or the negative image recording layer which provides the dynamic friction coefficient of the outermost surface of the planographic printing plate precursor.

2. A planographic printing plate precursor according to claim 1 , wherein the dynamic friction coefficient is within a range from 0.2 to 0.5.

3. A planographic printing plate precursor according to claim 1 , wherein the infrared ray absorbing agent comprises at least one member selected from the group consisting of a cyanine dye, a squarylium dye, a pyrylium salt and a nickel thiolate complex.

4. A planographic printing plate precursor according to claim 1 , wherein the content of the infrared ray absorbing agent is within the range from 0.01 to 50% by weight based on the total solid content of the negative image recording layer.

5. A planographic printing plate precursor according to claim 1 , wherein the compound that generates the radical or the acid comprises at least one member selected from the group consisting of an iodonium salt, a diazonium salt and a sulfonium salt.

6. A planographic printing plate precursor according to claim 1 , wherein the content of the compound that generates the radical or the acid is within the range from 0.1 to 50% by weight based on the total solid content of the negative image recording layer.

7. A planographic printing plate precursor comprising a substrate, a negative image recording Layer provided on the substrate, and an overcoat layer provided on the negative image recording layer,
wherein the negative image recording layer contains:
a compound that generates a radical or an acid by light or heat;
a polymerizable compound or a crosslinking compound; and
an infrared ray absorbing agent,
wherein a dynamic friction coefficient of the outermost surface of the planographic printing plate precursor, at the side of the negative image recording layer being provided toward an inserting paper inserted between the planographic printing plate precursors when the planographic printing plate precursors are laminated, is within a range from 0.2 to 0.7 and
wherein an additive is present on the inserted paper or the negative imaae recording layer which provides the dynamic friction coefficient of the outermost surface of the planographic printing plate precursor.

8. A planographic printing plate precursor according to claim 7 , wherein the dynamic friction coefficient is within a range from 0.2 to 0.5.

9. A planographic printing plate precursor according to claim 7 , wherein the infrared ray absorbing agent comprises at least one member selected from the group consisting of a cyanine dye, a squarylium dye, a pyrylium salt and a nickel thiolate complex.

10. A planographic printing plate precursor according to claim 7 , wherein the content of the infrared ray absorbing agent is within the range from 0.01 to 50% by weight based on the total solid content of the negative image recording layer.

11. A planographic printing plate precursor according to claim 7 , wherein the compound that generates the radical or the acid comprises at least one member selected from the group consisting of an iodonium salt, a diazonium salt and a sulfonium salt.

12. A planographic printing plate precursor according to claim 7 , wherein the content of the compound that generates a radical or an acid is within the range from 0.1 to 50% by weight based on the total solid content of the negative image recording layer.

13. A planographic printing plate precursor laminate comprising planographic printing plate precursors and inserting paper,
wherein the planographic printing plate precursors each comprise a substrate and a negative image recording layer provided on the substrate containing:
a compound that generates a radical or an acid by light or heat;
a polymerizable compound or a crosslinking compound; and
an infrared ray absorbing agent;
wherein the inserting paper is inserted between the planographic printing plate precursors to be laminated;
wherein a dynamic friction coefficient of the outermost surface of the planographic printing plate precursor, at the side of the negative image recording layer being provided toward an inserting paper inserted between the planographic printing plate precursors when the planographic printing plate precursors are laminated, is within a range from 0.2 to 0.7; and
wherein an additive is present on the inserted paper or the negative image recording layer which provides the dynamic friction coefficient of the outermost surface of the planographic printing plate precursor.

14. A planographic printing plate precursor laminate according to claim 13 , wherein the dynamic friction coefficient is within a range from 0.2 to 0.5.

15. A planographic printing plate precursor laminate according to claim 13 , wherein the infrared ray absorbing agent comprises at least one member selected from the group consisting of a cyanine dye, a squarylium dye, a pyrylium salt and a nickel thiolate complex.

16. A planographic printing plate precursor laminate according to claim 13 , wherein the content of the infrared ray absorbing agent is in the range of 0.01 to 50% by weight based on the total solid content of the negative image recording layer.

17. A planographic printing plate precursor laminate according to claim 13 , wherein the compound that generates the radical or the acid comprises at least one member selected from the group consisting of an iodonium salt, a diazonium salt and a sulfonium salt.

18. A planographic printing plate precursor laminate according to claim 13 , wherein the content of the compound that generates the radical or the acid is within the range from 0.1 to 50% by weight based on the total solid content of the negative image recording layer.

19. A planographic printing plate precursor laminate comprising planographic printing plate precursors and inserting paper,
wherein the planographic printing plate precursors each comprise a substrate, a negative image recording layer provided on the substrate, and an overcoat layer provided on the negative image recording layer,
wherein the negative image recording layer contains:
a compound that generates a radical or an acid by light or heat;
a polymerizable compound or a crosslinking compound; and
an infrared ray absorbing agent;
wherein the inserting paper is inserted between the planographic printing plate precursors to be laminated;
wherein a dynamic friction coefficient of the outermost surface of the planographic printing plate precursor, at the side of the negative image recording layer being provided toward an inserting paper inserted between the planographic printing plate precursors when the planographic printing plate precursors are laminated, is within a range from 0.2 to 0.7; and
wherein an additive is present on the inserted paper or the negative image recording layer which provides the dynamic friction coefficient of the outermost surface of the planographic printing plate precursor.

20. A planographic printing plate precursor according to claim 1 , wherein the additive is dodecyl stearate.

21. A planographic printing plate precursor according to claim 7 , wherein the additive is dodecyl stearate.

22. A planographic printing plate precursor laminate according to claim 13 , wherein the additive is dodecyl stearate.

23. A planographic printing plate precursor laminate according to claim 19 , wherein the additive is dodecyl stearate.

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